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A siren is mounted on a tower and emits a sound whose frequency is 2140 Hz. A person is driving a car awayf rom the tower at 27 m/s.
A small block of mass m1 = 0.480 kg is released from rest at the top of a curved-shaped frictionless wedge of mass m2 = 3.00 kg.
When a visible light is receding, its color will?
The predominant frequency of a certain police car's siren is 1550Hz when at rest. What frequency do you detect if you move with a speed of 30.0m/s
If the radius of the loop is R and the incline starts 4 R above base of the track, what is the normal force exerted by the track on the mass.
Consider two observers moving in the x direction with respect to a stationary reference frame. The worldline of one observer is given by x1 = (1/3)t
What is the period of oscillation of the scale? Express your answer numerically in seconds.
A vector ?eld v(x, y, z) is given by the formula
Two particles each have a mass of 5.4 x 10-2 kg. One has a charge of +4.8 x 10-6 C, and the other has a charge of -4.8 x 10-6 C.
Solve for e algebraically by solving the energy equations for v1 and v2 in terms of y1 and y2 and taking the ratio.
A 90 kg fullback moving east with a speed of 5 m/s is tackled by a 95 kg opponent running north at 3.0 m/s. If the collision is perfectly inelastic.
Explain why Kirchoff's first rule is equivalent to conservation of electric charge, while second rule is equivalent to the conservation of energy?
A 5.3 g bullet leaves the muzzle of a rifle with a speed of 336 m/s. What force (assumed constant) is exerted on the bullet while it is traveling.
A 0.25 kg ball is thrown straight up into the air with an initial speed of 19 m/s. Find the momentum of the ball at the following locations.
Velocity and acceleration: consider a velocity vector given in standard unit vector form in rectangular Cartesian coordinates as
A particle of mass m=30 g slides inside a bowl whose cross section has circular arcs at each side and a flat horizontal central portion.
A block of mass m1 =2.0 Kg slides along a frictionless table with a speed of 10 m/s. Directly in front of it, and moving in the same direction.
In the Hilbert space C^2 x C^2 In the Hilbert space C^2 x C^2
A piston (1) as shown in the figure has a diameter of 0.25 inches, and piston (2) has a diameter of 1.5 inches.
Compare the potential energy of the ball prior to its release to the kinetic energy of the ball just as it leaves the table.
A 325gram piece of gold at 425C is dropped into 200ml of water at 22.0C. The specific heat of gold is 0.031 cal/g-C.
The world seems to think that a new temperature scale is needed, the NurAn degree. On this scale it is decided that water will freeze at 17 degrees
2 stationary point charges +3.00 nC and +2.00 nC are seperated by a distance of 50.0 cm. An electron is released from rest at a point midway.
A car of mass 1600 kg is travelling East at a speed of 25m/s along a horizontal roadway. When its brakes are applied, the car stops in 6.0 s.
Express the speed of light in terms of (AU) per minute.